CVE-2023-21940: Medium severity Oracle MySQL Server vulnerability
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Components Services). Supported versions that are affected are 8.0.32 and prior. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).
Other sources
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Components Services). Supported versions that are affected are 8.0.32 and prior. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server.
External References:
https://www.oracle.com/security-alerts/cpuapr2023.html#AppendixMSQL
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
ubuntu/mysql-8.0to a version that resolves this vulnerability.Fixed in 8.0.33-0ubuntu0.20.04.1 - Upgrade
Upgrade
ubuntu/mysql-8.0to a version that resolves this vulnerability.Fixed in 8.0.33-0ubuntu0.22.04.1 - Upgrade
Upgrade
ubuntu/mysql-8.0to a version that resolves this vulnerability.Fixed in 8.0.33-0ubuntu0.22.10.1 - Upgrade
Upgrade
ubuntu/mysql-8.0to a version that resolves this vulnerability.Fixed in 8.0.33-0ubuntu0.23.04.1 - Upgrade
Upgrade
ubuntu/mysql-8.0to a version that resolves this vulnerability.Fixed in 8.0.33 - Upgrade
Upgrade
redhat/mysqlto a version that resolves this vulnerability.Fixed in 8.0.33
Event History
Frequently Asked Questions
What is CVE-2023-21940?
CVE-2023-21940 is a vulnerability in the MySQL Server product of Oracle MySQL that allows a high privileged attacker with network access to compromise the MySQL Server.
Which versions of Oracle MySQL are affected by CVE-2023-21940?
Versions 8.0.32 and prior are affected by CVE-2023-21940.
What is the severity of CVE-2023-21940?
CVE-2023-21940 has a severity score of 4.4 (medium).
How can a high privileged attacker exploit CVE-2023-21940?
A high privileged attacker with network access can exploit CVE-2023-21940 through multiple protocols to compromise the MySQL Server.
How can I fix CVE-2023-21940?
To fix CVE-2023-21940, update your Oracle MySQL Server to version 8.0.33 or later.